TIC

Question 1

Name 3 types of infrared emitters?

Answer 1

Passive

• Don’t generate heat on their own
• Heat up and cool down by absorbing heat from other objects Furniture
• Furniture

Active

• Generate their own controlled heat
• Heat remains relatively constant
• Humans/animals

Direct

• Generate heat in large amounts
• Often uncontrolled
• Sun/Fire/energy sources

Question 2

Three spot wipe?

Answer 2

Wiping exterior of Ba mask

Wiping Tic screen

Wiping Tic lens

Question 3

Limitations of the TIC?

Answer 3

Reflections

• TIC cannot see through glass or water, since shiny and glossy surfaces reflect thermal radiation
• Heated glass may show up as a lighter shade
• Some penetration may happen in rain, a broken stream or vapour

Moving to fast

Depth perception

Stairs